W7lr@aol.com wrote:
>
> Dear Josep My 160m antenna is a vertical 90 feet high made with
> 4" outside diameter thinwall aluminum irrigation pipe (it comes in 40 foot
> lengths here). I guy it with 4 nylon guy ropes every 15 feet.
> At the top I have 4 wires (#12 copper) each 42 feet long connected to the
> top of the vertical and with insulators at the 42 foot end of each which goes
> to a nylon guy rope for the rest of the guy from the top. That top loading
> and the height of the pipe makes the antenna inductive. So I drive it
> with an L network made of two ceramic capacitors. I use 2 such networks
> so one for 1800 to 1860 khz and another for 1860 to 2000 khz. Switch
> them in/out with relays. It works very well. It is hard to get up but can
> be
> done with temporary towers and lots of help. Let me know if you want any
> more detail. 73 Bob W7LRDear Bob ;
Many thank's for replaying to my letter about top loaded vertical project
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